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Tested it today (without the 2 air pipes) and...i don't know it don't think there is any difference, maybe a little more noise.
I'm concerned that the box (without the pipes) is going to suck some hot air (esp. in summer) or will it not?
when you're so worried , get some 73 mm CAF off of Ebay or the like and point them towards the headlight. My experience is, after 10+ trials/experiments with c.a.f. setups, that this works out best on the F4R engine.
Foglight/bumper/forced air induct etc. do not work better, even worse and the filter element gets dirty VERY quickly this way also